Use A2uploader from here: a2uploader and CID53? and these files:

1. W902_R3DA026_MAIN_GENERIC_PT_RED52
2. W902_R3DA026_FS_NORDIC_RED52
3. K850i_1201-0071_R11A_GENERIC_NORDIC

Then make this:



And update via SEUS to lastest version R3EG004.